"To Be Myself" (ボクがボクであるために, Boku ga Boku de Aru Tame ni, Viz: I am Me) is chapter 585 of the original Naruto manga.
Having finished reminiscing about his childhood, Kabuto tells the brothers that after assimilating Orochimaru's DNA, he continued to add things to himself and that as his pawns were a show of his own power and that he would not allow Itachi to oppose him. Even though Itachi rejects what Kabuto says, Kabuto presses on with his attack. As Sakon emerges from the base of his navel snake, he has him use his Attack of the Twin Demons technique to transform into Jirōbō, who then uses the Earth Release: Earth Shore Return technique to part the circle of flames that the Uchiha siblings had created around themselves. Giving them no time to react, he brings forth Kidōmaru next and has him use the Spider Web Unrolling technique to trap the brothers — who use Amaterasu to incinerate the uncuttable web. Moving behind the brothers and producing Kimimaro next, he has him use the Dance of the Seedling Fern technique to block the area behind them while also creating another web in front of them, effectively caging the brothers in. After they manage to escape, Kabuto uses Tayuya and her Demonic Flute: Phantom Sound Chains technique to attack the siblings with an auditory genjutsu effectively incapacitating them. Bringing forth Orochimaru himself finally, Kabuto has him transform into his white snake form and attack the brothers. They however find a way to escape the genjutsu and fend the snake off by casting genjutsu on each other. Kabuto, however, appears from the mouth of the snake with a surprise attack and bisects Itachi, stating that a genius that has had everything would not understand him wanting to find his true self and then declared that no one would stand in his way with this.